Update app.py

app.py

@@ -59,7 +59,7 @@ def issue_url(username, repos):
 def check_username(username, version):
     username = username.lower()
     output_md = ""
-    repos = db.sql(f"SELECT repo FROM repos WHERE user='{username}' AND version='{version}' ORDER BY repo").collectall()
+    repos = db.sql(f"SELECT repo FROM repos WHERE user='{username}' AND version='{version}' ORDER BY repo").fetchall()
     repos = [repo[0] for repo in repos]
 
     if repos: